Flexible shade for electric lamps



Aug. 21, 1923. R 1,465,333 F. M. ASHLEY FLEXIBLE SHADE FOR ELECTRIC LAMPS Filed Nov. s.' 1920 INVENTOR shade.

Patented Aug. 21, 1923.

PATENT OFFICE.

FRANK M. ASHLEY, OF NEW YORK, N. Y.

FLEXIBLE SHADE FOR ELECTRIC LAIEPS.

Application filed November To all whom it may concern: 7

Be it known that I, FRANK M. AsHLnY, a citizen of the United States,-and resident of the city of New York, in the county of Kings and State of New York, have invented certain new and useful Improvements in Flexible Shades for Electric Lamps, of which the following is a specification.

My invention relates to shades for electric lamps and the object of my invention is to provide a flexible translucent shade hat can be easily attached to the bulb of an incandescent lamp and envelop the same.

The drawing is a fragmentary view of my improved shade showing an electric bulbtherein.

deferring to the drawing which forms a part of this specification, A indicates an in candescent electric light bulb and B an en velope of thin flexible rubber. C indicates a ring of asbestos or other suitablematerial which is slipped over the small diameter of the bulb or may be made large enough to fit nearer to the larger end if desired, and fits air-tight thereon. This ring C is provided with a circumferentially extending groove (3 on which the reinforced band B of the en velope B tightly flts. The circumference of the upper part of the opening of the ring G is larger than the circumference of the lower part of the opening soto conform to the sloping sides of an electric bulb. D and D are check-valves of simple construction fixed on the envelope and through which air or other suitable gas is introduced to inflate the envelope A small tube with a conical end to fit the conically formed inlet D may be employed for this purpose, if desired. Artistic painting or advertising matter may be impressed or otherwise placed upon the en velope and displayedv if desired. Rubber such as used in the making of toy balloons may be used and has been found satisfactory material from which to make the envelope or The ring (I prevents the heat generated in the bulb from injuring the rubber and this ring may be made considerably larger than shown in the drawing, if desired.

When the envelope is fully inflatedv and the lamp is operating the lightshines through the shade. The less the envelope is inflated, the less light shines through and therefore the 7 degree of brightness can be controlled to a 8, i220. Serial No. 422,489.

considerable degree by changing the thickness of the envelope as the same is relatively deflated. \Vhen the envelope B is inflated the ring C will be subjected to a pulling stress which will cause the ring to more tightly grip the electric light bulb A.

Having thus described my invention, I claim as new:

l. The combination of an electric incandescent lamp comprising a glass bulb, a ring mounted on the glass surface thereof in airtight relation therewith, and an expansiblc shade portion comprising a band which fits over said ring in air-tight relation therewith and is carried thereby.

2. A shade adapted to enclose a lamp bulb in air-tight relation, comprising an elastic envelope having an openingwith a reinforced elastic edge and a ring having its inner surface adaptedto lit the surface of the bulb and having a groove, in which the edge of said opening fits.

3. fr flexible shade adapted to enclose a lamp bulb in air-tight relation, comprising a elastic envelope having an opening with a reinforced elastic edge and a heat insulating ring having its inner surface adapted to fit the surrace of the bulb and having a groove, in which the edge of said opening fits, and a valve ineans through which said shade may be inflated.

l. A flexible shade comprising an envelope, a lamp bulb, gas interposed between the envelope and the bulb, and a ring adapted to be pressed against the bulb by means of the gas in the envelope and means connecting the envelope and ring in air tight relation.

5. A flexible shade comprising an envelope supported by a bulb and having an opening in the envelope, gas being interposed between the envelope and bulb, a ring adapted to rest on the lower part of the bulb, the circumference of the opening in the upper part of the ring being greater than the circumference of the lower part thereof whereby the ring may be wedged on the bulb when the shade is inflated and means connecting the shade and the ring.

Si ned at New York city, in the county of and tatate of New York this 6th day of November A. D. 1920.

FRANK M. ASHLEY.

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